Reverse control mechanism



Sept. 25, 1934. o. F. RODGERS REVERSE" CONTROL MECHANISM 4 Sheets-Sheet1 Filed Sept. 26, 1933 lnvenfar O F Rodgers Q gmmm N flllomey Sept. 25,1934. o. FJRODGERS REVERSE CONTROL MECHANISM Filed Sept. 26, 1953 4Sheets-Sheet 2 Rodyers Filed Sept. 26, 1933 4 Sheets-Sheet 3 Invenior O.F. Fodqers By 9mm Sept. 25, 1934 o. F. RODGERS REVERSE] CONTROLMECHANISM Filed Sept. 26, 1933 4 Sheets-Sheet 4 Kw?! u @552 F Invenior0. 7 Rodyers Bygg Patented Sept. 25, 1934 omrro STATES PATENT orricaREVERSE CONTROL MECHANISM Otis F. Rodgers, Whiting, Iowa ApplicationSeptember 26, 11333, Serial Nol 69l 052 2 Claims. (Cl 188 -30) Thisinvention is an improved reverse control the shaft 19 is provided withkeys 22 that fit in or look mechanism and relates to a control or wayssuitably provided in the hub of the cam lock for preventing a vehiclefrom running bach- 18 as will be clear from a study of Figures 8 andward, when it is necessary to stop on an up grade 9. At one end of thekeys 22 shaft is is proi and which will not interfere on a resumption ofvided with an integral collar 23 between which forward movement. and aremovable collar 24 the cam 18 is re- The object of the invention is toimprove gentained on the shaft against longitudinal moveerally uponsuchlocks or mechanisms now in ment relative to the shaft. Also, asshown in and to provide a device of this character Figure 5 theformations provided for the bear- 101 which may be readily applied tothe automobile, ings 2G, 21 and through which the shaft 19 exat isthoroughly eificientin operation, and inextends are equipped. withsuitable packings 25 pensive to install and maintain. which surround theshaft as shown. At each The invention together with its objects and endthereof the shaft 19 issquared or otherwise advantages will be bestunderstood from a study formed so as to be readily placed in driving en-15! of the following description, taken in connection gagement with thedrive shaft 26 of the trans- 70 with the accompanyingdrawings wherein isi1 mission. lustrated a preferred embodiment of the in- The plunger 1'7is normally urged inwardly for vention. engagement with the humps of thecam 18 Figure 1 a 1 1 8 w of a port on of an through themedium of a coilspring 27 that is 2011 automobile illustrating the application of thedisposed about the stern 28 of the plunger and invention thereto.impinges at one end against the adjacent end es 2, 3 and 4 are sectionalviews taken of the plunger 1'7, and at a relatively oppositeSubstantially 011 {7118 lines 3-3 a d end against a plug 29 that issuitably anchored respectivelyof Figural. i in the outer end of thecylinder 17. Suitably 25. Figure 5 is "a detail sectional view takensubsecured on the outer end of the plunger stem 23 30 s'banliially 011the e 5 Of gure 3. is a rubber washer 30 which serves to limit the ure 6is a perspectiv V w Of the locking inwardmovement of the plunger 17 andthe p u washer 30 being of rubber there will be no no- F e is a p r p ivv w f h as r ticeable noise upon Contact of the washer so 3ojcylinder inwhich the locking plunger of Figure ith the plug 29, 6 p For controllingoperation of the plunger 17 Figure 3 is a perspective View Of the Camthere is providedafork 31 that straddles the outer Shaft, and end of theplunger stem 28 between the washer Figure 9 is a sectional view throughthe shaft 30 and a collar 32 provided on s id st Th 35 with the cammounted thereon and shown in Shank portion of t fork 31 operates i aguit- 90 eleValJiOIlable bore provided therefor in the casing exten-Referring to the drawings by reference nusion 4 and t t inner d h pinand 5101; 315 the casing housing 10 is mounted on a connection 33 with alever 34 pivotally mounted pair of relatively spaced transverse bars 11which Within a Vertical recess 35 provided therefore in am Secured atthe encls thereof to t Chassis the formation 14. A cap for the upper endof the 05 bars 12 of the automoblle The housmg or casrecess is providedon the lever 34 as indicated ing 10 is substantially circular and isprovided by the reference numeral 36; a Suitable Spring p ifi t 3 2 3253.33} device 37 normally urging the cap 36 downwardly h f e hlvmgextendinc, into closing position with respect to the recess 35. ere mmis a o a a The upper end of the lever 34 is connected with therethroughan Opening 15 m Whmh 1S snugly one end of a Bowden wire 38 that serves,as clearly fitted a cylinder 16.

Mounted for reciprocation in the cylinder 16 shown In the drawmgs as adash control for the 1 manipulation of the plunger 17; the 1s a lockingplunger 1'? the inner end of which manna l is engageable with the camhumps of a brake or Bowden w e h e v d d W t a sultable pu lock cam 18that is mounted on a shaft 19 jour- -0n 39 as shown.

nalled in suitable bearings 20, 21 provided re- To ho d e plunger 1' ineither released or spectively in one wall of the casing 10 and theprojected position there is suitably provided in cover plate 13. theformation 14 a spring pressed locking plunger 55.1 As shown in Figure 8intermediate its ends or detent 40 that is engageable with notches pronovided on the shank of the fork 31 as shown in Figure 4.

The casing 10 is adapted to contain lubricant as shown in Figure 4, afilling opening for the casing being indicated by the reference numeral41. A passage 42 for the lubricant leads through the formation 14 fromthe casing 10 to an aperture 43 provided in the cylinder 16, andobviously as the cam 18 is rotating certain of the lubricant will beforced through the passage 42 and opening 43 against the side of theplunger 1'7 for lubricating purposes. Adjacent the stem equipped endthereof the plunger 17 is provided with a suitable packing i4.

l'fhe operation and utility of the device will be apparent from thefollowing: 7

If desired the parts may be normally arranged as shown in Figure 4 withthe plunger 17 arranged in the path of the humps 0n the cam 18, and whenin this position the plunger 17 and the teeth or humps of the cam 18will prevent reverse rotation of the shaft 19 and likewise retrogrademovement of the vehicle.

If at any time it is desired to release the plunger 17 the operator bypulling on the knob 39 of the manual control for the device will causethe lever 3a to swing in a clockwise direction in Figure 4 thus movingthe fork 31 to the left in Figure 4, and the plunger 17 in acorresponding direction against the action of spring 27 for drawing thefree end of the plunger 1'7 out of the path of the teeth or humps of thecam 18 so that it is possible to permit the automobile to roll backward.When the plunger 17 has been moved in this last noted direction thelocking plunger or detent 40 will move into engagement with the propernotch on the shank of the fork 31 and thus hold the parts in thisposition until such time as the control is manipulated for rocking thelever 34 in a reverse direction, when the parts will then be returned tothe position shown in Figure i.

From the above it will be seen that the plunger 17 may be locked ineither of its two positions, and when locked in the position shown inFigure 4 will not interfere with the forward operation or movement ofthe vehicle, but at the same time will be in a position to coact withthe humps or teeth of the cam 18 to prevent retrograde movement of theautomobile.

Having thus described my invention, what I claim as new is:

1. In a motor vehicle including a motor driven shaft, a casing, a camhaving a plurality of cam teeth on its periphery, located in the casingand connected with the shaft, an extension at one side of the casinghaving a cylinder therein, one end of which is in communication with theinterior of the casing, a plug for closing the other end of the casing,a plunger located in the cylinder and having one end adapted to beengaged by the cam teeth, a stem connected to the other end of theplunger and passing through the plug, a spring encircling the stem andhaving one end bearing against the plunger and the other end against theplug, spaced projections on the outer end of the stem, a yoke locatedbetween the projections and having a part slidably arranged in theextension, said part having a pair of spaced recesses therein, a detentcarried by the extension for engaging either one of said recesses, alever pivotally arranged in an opening in the eX- tension and having oneend pivotally connected to said part of the yoke, operating meansconnected to the other end of the lever, a cap slidably arranged on thelever, spring means for iolding the cap in position closing the leveropen- 2. In a motor vehicle including a motor driven shaft, a casing, acam rotatably arranged in the casing and connected with the shaft andhaving cam teeth on its periphery, an extension on the casing having acylinder therein, one end of which is in communication with the interiorof the casing, a spring pressed plunger in the cylinder for engaging thecam teeth, means for projecting and retracting the plunger, said casingcontaining lubricant and said extension having a passage therein havingone end in communication with the lower part of the casing and its otherend in communication with the cylinder, whereby the rotation of the camwill force some of the lubricant from the casing through the passageinto the cylinder to lubricate the plunger.

OTIS F. RODGERS.

